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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
...lues. As I iterate over the data set, I need to detect such missing values and handle them in special ways.
2 Answers
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MySql - Way to update portion of a string?
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Use the LIKE operator to find the rows that you care about and update them using the REPLACE function.
For example:
UPDATE table_name SET field_name = REPLACE(field_name,'search','replace') WHERE field_name LIKE '%some_value%'
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Checking if a folder exists (and creating folders) in Qt, C++
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Why it isn't static? QDir::exists("absolutepath") and QDir::mkdir(""absolutepath")
– yalov
Jun 19 '17 at 17:20
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Use of undeclared identifier 'kUTTypeMovie'
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You have to add the framework MobileCoreServices to the project, and then import it:
Objective C:
#import <MobileCoreServices/MobileCoreServices.h>
That will make the problem go away.
Swift 4:
import MobileCoreServices
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PHP sprintf escaping %
... postfix: "",
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Avoiding memory leaks with Scalaz 7 zipWithIndex/group enumeratees
... postfix: "",
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What limits does scala place on the “acceptable complexity” of inferred types?
...or example, the type of if (cond) e1 else e1 is the LUB of the types of e1 and e1.
These types can get quite large, for example try this in a REPL:
:type Map(1 -> (1 to 10), 2 -> (1 to 10).toList)
scala.collection.immutable.Map[Int,scala.collection.immutable.Seq[Int] with scala.collection.Ab...
How to force a SQL Server 2008 database to go Offline
..., State 1, Line 1 ALTER DATABASE statement failed.
– Andez
Jul 9 '12 at 11:02
6
I've seen occuren...
Search for all files in project containing the text 'querystring' in Eclipse
I work in Dreamweaver and Eclipse when developing. I think Dreamweaver has a really nice search where you can search for text within all files of your current project.
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What is the difference between Class.this and this in Java
...ence a nonstatic InnerClass will always have a reference of its OuterClass and all the
fields and methods of OuterClass is available to the InnerClass.
public static void main(String[] args) {
OuterClass outer_instance = new OuterClass();
OuterClass.InnerClass inner_instance1 = out...